REPORTER: AN INVESTIGATOR TRACKS THAT REACTION WITH A POLYGRAPH. >> IT'S THE FIGHT ... Kavanaugh.WGAL wanted to know more about how polygraphs work and how reliable they are.

The polygraph or lie detector test has been in use for over 100 years. It has been heralded as a technological marvel that allows investigators to accurately determine when someone is lying and ...

The truth about lie detectors is that we all really want them to work. It would be much easier ... That’s what the innovators behind the modern-day polygraph set out to do—but the scientific ...

How does a lie detector work? Lie detectors work on the principle that anyone who’s lying will be nervous, and nervous people tend to produce more adrenaline, which makes their hearts beat ...

But, how do they work? And, how accurate are they ... and says it starts with a 45-minute to hour-long talk about the polygraph, the questions and what to expect. "Everyone who comes into my ...

On November 21, the Delhi Police were granted permission to conduct a polygraph test on Aaftab Poonawala, the accused in the murder of Shraddha Walkar. A polygraph test, also known as lie detector ...

Does the polygraph work? There has been a lot of controversy about whether lie detectors work. Some experts claimed that a high proportion of persons who “failed” the polygraph subsequently ...

Here's what to know. The modern polygraph was invented a little over a century ago by a police officer in Berkeley, Calif. That officer, John Larson, was inspired by the work of psychologist ...

How does a lie detector work? Lie detectors work on the principle that anyone who’s lying will be nervous, and nervous people tend to produce more adrenaline, which makes their hearts beat ...